<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width,initial-scale=1.0">
    <title>vue-element-demo</title>
    <style>
        body, h1, h2, h3, h4, h5, h6, hr, p, blockquote, dl, dt, dd, ul, ol, li, pre, form, fieldset, legend, button, input, textarea, th, td { margin:0; padding:0; }
        body, button, input, select, textarea { font:12px/1.5tahoma, arial, \5b8b\4f53; }
        h1, h2, h3, h4, h5, h6{ font-size:100%; }
        address, cite, dfn, em, var { font-style:normal; }
        code, kbd, pre, samp { font-family:couriernew, courier, monospace; }
        small{ font-size:12px; }
        ul, ol { list-style:none; }
        a { text-decoration:none; }
        a:hover { text-decoration:underline; }
        sup { vertical-align:text-top; }
        sub{ vertical-align:text-bottom; }
        legend { color:#000; }
        fieldset, img { border:0; }
        button, input, select, textarea { font-size:100%; }
        table { border-collapse:collapse; border-spacing:0; }
      </style>
  </head>
  <body>
    <div id="app"></div>
    <!-- built files will be auto injected -->
    <script>
        // let arr = [1];
        // let arr1 = [2, 3];
        // Array.prototype.push.apply(arr, arr1)
        // console.log(arr)
        var obj = {}
        Object.defineProperty(obj, 'a', {
            get: function() {
                console.log('this is get obj')
                return 1
            },
            set: function() {
                console.log('this is obj set')
            }
        })
        obj.a = 5
    </script>
  </body>
</html>
